<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-01 -060 12:30:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="18.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.01 (060) 12:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202606003011230009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.471" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.821" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.125" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.235" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="358.446" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="241.566" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.210" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.735" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.657" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.897" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="187.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="101">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 285.000 287.500 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 300.000 305.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 325.000 325.000 327.500 330.000 330.000 335.000 336.667 338.333 340.000 345.000 345.000 345.000 350.000 350.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 380.000 380.000 385.000 385.000 390.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 425.000 430.000 430.000 435.000 435.000 445.000 445.000 450.000 450.000 455.000 460.000 465.000 470.000 475.000 475.000 480.000 480.000 485.000 490.000 495.000 495.000 500.000 505.000 505.000 505.000 515.000 520.000 520.000 525.000 530.000 535.000 540.000 545.000 550.051 555.589 561.687 568.436 575.945 584.350 593.823 604.580
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 0 0 0 0 54 0 51 57 0 60 51 0 0 45 51 54 45 51 60 60 57 48 54 0 48 54 48 0 0 57 48 57 60 60 63 60 48 60 51 60 48 51 51 0 45 57 60 60 60 57 54 66 66 69 69 66 66 63 63 60 63 63 60 57 60 60 63 60 66 66 66 54 57 57 57 60 60 54 51 51 51 60 60 57 54 57 54 51 51 54 51 48 48 45 45 48 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 -1.171875 0.390625 0.390625 0.390625 0.390625 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -2.734375 0.390625 0.390625 0.390625 -1.953125 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -2.734375 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.525 90.0 95.0 100.0 105.0 110.0 112.667 115.0 115.334 118.001 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 358.446 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.101 2.705 3.023 3.125 3.003 3.003 3.003 3.125 3.207 3.384 3.545 3.7 3.853 4.008 4.166 4.328 4.496 4.668 4.845 5.026 5.211 5.397 5.585 5.772 5.958 6.142 6.323 6.501 6.676 6.847 7.014 7.178 7.339 7.497 7.653 7.805 7.956 8.104 8.251 8.396 8.539 8.681 8.822 8.962 9.102 9.241 9.379 9.517 9.653 9.789 9.923 10.053 10.177 10.289 10.38 10.438 10.45 10.45 10.443 10.43 10.409 10.382 10.348 10.308 10.262 10.21 10.153 10.092 10.025 9.955 9.88 9.801 9.719 9.634 9.545 9.454 9.36 9.264 9.166 9.066 8.964 8.86 8.755 8.649 8.542 8.434 8.325 8.216 8.107 7.997 7.886 7.776 7.666 7.556 7.446 7.336 7.227 7.118 7.01 6.902 6.795 6.689 6.584 6.479 6.375 6.272 6.17 6.069 5.969 5.871 5.773 5.676 5.58 5.486 5.393 5.3 5.209 5.12 5.031 4.943 4.857 4.772 4.688 4.605 4.524 4.444 4.365 4.287 4.21 4.134 4.06 3.987 3.915 3.844 3.774 3.705 3.638 3.571 3.506 3.442 3.379 3.317 3.255 3.195 3.136 3.078 3.021 2.965 2.91 2.856 2.803 2.751 2.7 2.649 2.6 2.551 2.503 2.457 2.41 2.365 2.321 2.277 2.234 2.192 2.151 2.111 2.071 2.032 1.993 1.956 1.919 1.883 1.847 1.812 1.778 1.744 1.711 1.679 1.647 1.616 1.585 1.555 1.525 1.497 1.468 1.44

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.125" PeakHeight="110.0" Num="3" Error="0.0">
-30.298 12.853 -3.03
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.125" EndFrequency="10.45" PeakHeight="358.446" Num="5" zHalfNm="241.566" Error="4.222">
-208.527 -52.459 29.151 -12.957 4.347
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.001" Depth="0.122"/>
<TopsideChapman PeakHeight="358.446" PeakDensity="1354869.8" PeakScaleHeight="80.897" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
